preferredsize

问题 I'm currently making a GUI that makes use of the FlowLayout class. Now, this class is meant to allow components be set by their prefer sized methods and I believe, isn't supposed to have priority in setting the component size. However, when I used a setSize method for a JTextField, the FlowLayout object didn't seem to recognize the change size command. But when I used the setColumn method, the FlowLayout object did respond to the change in size command. Why is this? 回答1: FlowLayout object

问题 I'm tried to add a JPanel to a JScrollPane using: panel1 Panel1 = new panel1(); jScrollPane1.setViewportView(Panel1); and it worked. But the problem is scrollPane doesn't show scroll bars even the Panel1 is bigger. (I'm working with NetBeans & panel1 is a jpanel form) 回答1: Override, getPreferredSize() method for the said JScrollPane , you might be able to see the Scroll Bar. Or one can simply call setPreferredSize(), though as stated in the API Sets the preferred size of this component. If

问题 I want to specify fixed width of my JList I followed example provided by Gilbert Le Blanc 22k getContentPane().setLayout(new BoxLayout(getContentPane(), BoxLayout.X_AXIS)); Panel panel = new JPanel(); panel.setBackground(Color.WHITE); getContentPane().add(panel); String [] queries = {"a", "b", "a", "b" , "a", "b", "a", "b"}; panel.setLayout(new BorderLayout()); JList list = new JList(queries); list.setMaximumSize(new Dimension(200, 200)); // this line does not do the job list.setMinimumSize

问题 I want to specify fixed width of my JList I followed example provided by Gilbert Le Blanc 22k getContentPane().setLayout(new BoxLayout(getContentPane(), BoxLayout.X_AXIS)); Panel panel = new JPanel(); panel.setBackground(Color.WHITE); getContentPane().add(panel); String [] queries = {"a", "b", "a", "b" , "a", "b", "a", "b"}; panel.setLayout(new BorderLayout()); JList list = new JList(queries); list.setMaximumSize(new Dimension(200, 200)); // this line does not do the job list.setMinimumSize

问题 I want to created a panel with a table, which fills the entire available space. I do this using following code: public class MyFrame extends JFrame { public EconomyFrame() throws HeadlessException { super("..."); final JTabbedPane tabbedPane = new JTabbedPane(); add(tabbedPane); final JPanel companiesPanel = new JPanel(); final CompaniesTableModel companiesModel = new CompaniesTableModel (ApplicationStateSingleton.INSTANCE.getPersistence().getCompanies()); final JTable companiesTable = new

问题 I want to created a panel with a table, which fills the entire available space. I do this using following code: public class MyFrame extends JFrame { public EconomyFrame() throws HeadlessException { super("..."); final JTabbedPane tabbedPane = new JTabbedPane(); add(tabbedPane); final JPanel companiesPanel = new JPanel(); final CompaniesTableModel companiesModel = new CompaniesTableModel (ApplicationStateSingleton.INSTANCE.getPersistence().getCompanies()); final JTable companiesTable = new

问题 I am creating an window with a JToolBar containing two buttons. One is a regular JButton and the other is a BasicArrowButton ( javax.swing.plaf.basic.BasicArrowButton ). Without doing any additional configuration, the JButton does not expand in the toolbar, but the BasicArrowButton expands to occupy the complete toolbar. I have tried to configure it to fit in a small 16x16 square by setting its maximum and preferred size to 16x16. But that doesn't work. Also tried using setSize() without

问题 I have the following layout that looks like this: But I would like the table at the top to be minimized to just the headers, then grow vertically as clients are added. How do I go about doing this? Here is the code currently...... JFrame frame; JTable clientTable; DefaultTableModel clientTableModel; JTextArea messageArea; ... String[] tableColumnNames = ... Object[][] data = ... Toolkit toolkit = Toolkit.getDefaultToolkit (); Dimension dim = toolkit.getScreenSize(); frame = new JFrame("Server

问题 when I increase the preferredSize, more of the Bufferedimage(on a JPanel, on a JFrame) is found. The size of the image is going to vary depending on the size of the file my program is reading, where I set the scrollpane; public Frame(String title, int theWidth, int theHeight) throws FileNotFoundException { super(String.format("Title", title)); this.width = theWidth; this.height = theHeight; this.panel = new Panel(width, height); this.scroller = new JScrollPane(this.panel); this.panel

问题 I have a custom JPanel. The only thing that is in it, is a drawing of a rectangle, using the drawRect method of the Graphics object. The JPanel is always in a very specific square size, refuses to get any bigger or smaller. Tried overriding the getPreferredSize() method, didn't work. Tried setting different layout managers for this custom JPanel, and also tried every layout manager for the JPanel that hosts this JPanel. Still, the size of the custom JPanel stays the same. As I said, the